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- /* Or1k-specific support for 32-bit ELF.
- Copyright (C) 2001-2022 Free Software Foundation, Inc.
- Contributed for OR32 by Johan Rydberg, jrydberg@opencores.org
- PIC parts added by Stefan Kristiansson, stefan.kristiansson@saunalahti.fi,
- largely based on elf32-m32r.c and elf32-microblaze.c.
- This file is part of BFD, the Binary File Descriptor library.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, see <http://www.gnu.org/licenses/>. */
- #include "sysdep.h"
- #include "bfd.h"
- #include "libbfd.h"
- #include "elf-bfd.h"
- #include "elf/or1k.h"
- #include "libiberty.h"
- #define N_ONES(X) (((bfd_vma)2 << (X)) - 1)
- #define PLT_ENTRY_SIZE 16
- #define PLT_ENTRY_SIZE_LARGE (6*4)
- #define PLT_MAX_INSN_COUNT 6
- #define OR1K_MOVHI(D) (0x18000000 | (D << 21))
- #define OR1K_ADRP(D) (0x08000000 | (D << 21))
- #define OR1K_LWZ(D,A) (0x84000000 | (D << 21) | (A << 16))
- #define OR1K_ADD(D,A,B) (0xE0000000 | (D << 21) | (A << 16) | (B << 11))
- #define OR1K_ORI(D,A) (0xA8000000 | (D << 21) | (A << 16))
- #define OR1K_ORI0(D) (0xA8000000 | (D << 21))
- #define OR1K_JR(B) (0x44000000 | (B << 11))
- #define OR1K_NOP 0x15000000
- #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
- static reloc_howto_type or1k_elf_howto_table[] =
- {
- /* This reloc does nothing. */
- HOWTO (R_OR1K_NONE, /* type */
- 0, /* rightshift */
- 3, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_NONE", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_32,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_32", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_16,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_8,
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_unsigned, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_8", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_LO_16_IN_INSN, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_LO_16_IN_INSN", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_HI_16_IN_INSN, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_HI_16_IN_INSN", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A PC relative 26 bit relocation, right shifted by 2. */
- HOWTO (R_OR1K_INSN_REL_26, /* type */
- 2, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 26, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_INSN_REL_26", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x03ffffff, /* dst_mask */
- true), /* pcrel_offset */
- /* GNU extension to record C++ vtable hierarchy. */
- HOWTO (R_OR1K_GNU_VTINHERIT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- NULL, /* special_function */
- "R_OR1K_GNU_VTINHERIT", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- /* GNU extension to record C++ vtable member usage. */
- HOWTO (R_OR1K_GNU_VTENTRY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 0, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- _bfd_elf_rel_vtable_reloc_fn, /* special_function */
- "R_OR1K_GNU_VTENTRY", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_32_PCREL,
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_32_PCREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffffffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_16_PCREL,
- 0, /* rightshift */
- 1, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_16_PCREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_8_PCREL,
- 0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
- 8, /* bitsize */
- true, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_8_PCREL", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_GOTPC_HI16, /* Type. */
- 16, /* Rightshift. */
- 2, /* Size (0 = byte, 1 = short, 2 = long). */
- 16, /* Bitsize. */
- true, /* PC_relative. */
- 0, /* Bitpos. */
- complain_overflow_dont, /* Complain on overflow. */
- bfd_elf_generic_reloc, /* Special Function. */
- "R_OR1K_GOTPC_HI16", /* Name. */
- false, /* Partial Inplace. */
- 0, /* Source Mask. */
- 0xffff, /* Dest Mask. */
- true), /* PC relative offset? */
- HOWTO (R_OR1K_GOTPC_LO16, /* Type. */
- 0, /* Rightshift. */
- 2, /* Size (0 = byte, 1 = short, 2 = long). */
- 16, /* Bitsize. */
- true, /* PC_relative. */
- 0, /* Bitpos. */
- complain_overflow_dont, /* Complain on overflow. */
- bfd_elf_generic_reloc, /* Special Function. */
- "R_OR1K_GOTPC_LO16", /* Name. */
- false, /* Partial Inplace. */
- 0, /* Source Mask. */
- 0xffff, /* Dest Mask. */
- true), /* PC relative offset? */
- HOWTO (R_OR1K_GOT16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOT16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 26 bit PLT relocation. Shifted by 2. */
- HOWTO (R_OR1K_PLT26, /* Type. */
- 2, /* Rightshift. */
- 2, /* Size (0 = byte, 1 = short, 2 = long). */
- 26, /* Bitsize. */
- true, /* pc_relative. */
- 0, /* Bitpos. */
- complain_overflow_signed, /* Complain on overflow. */
- bfd_elf_generic_reloc, /* Special Function. */
- "R_OR1K_PLT26", /* Name. */
- false, /* Partial Inplace. */
- 0, /* Source Mask. */
- 0x03ffffff, /* Dest Mask. */
- true), /* PC relative offset? */
- HOWTO (R_OR1K_GOTOFF_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOTOFF_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_GOTOFF_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOTOFF_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_COPY, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_COPY", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_GLOB_DAT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GLOB_DAT", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_JMP_SLOT, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_JMP_SLOT", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_RELATIVE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_RELATIVE", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_GD_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_GD_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_GD_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_GD_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDM_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LDM_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDM_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LDM_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDO_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LDO_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDO_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LDO_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_IE_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_IE_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_IE_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_IE_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LE_HI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LE_HI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LE_LO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LE_LO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_TPOFF, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_TPOFF", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_DTPOFF, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_DTPOFF", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_DTPMOD, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_DTPMOD", /* name */
- false, /* partial_inplace */
- 0xffffffff, /* src_mask */
- 0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_AHI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_AHI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_GOTOFF_AHI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOTOFF_AHI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_IE_AHI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_IE_AHI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LE_AHI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LE_AHI16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_SLO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_SLO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_GOTOFF_SLO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOTOFF_SLO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LE_SLO16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LE_SLO16", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A page relative 21 bit relocation, right shifted by 13, aligned.
- Note that this is *page* relative, not pc relative. The idea is
- similar, but normally the section alignment is not such that the
- assembler can infer a final value, which it attempts to do with
- pc-relative relocations to local symbols. */
- HOWTO (R_OR1K_PCREL_PG21, /* type */
- 13, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_PCREL_PG21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x001fffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_GOT_PG21, /* type */
- 13, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOT_PG21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x001fffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_GD_PG21, /* type */
- 13, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_GD_PG21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x001fffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDM_PG21, /* type */
- 13, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_LDM_PG21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x001fffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_IE_PG21, /* type */
- 13, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 21, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_IE_PG21", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0x001fffff, /* dst_mask */
- true), /* pcrel_offset */
- HOWTO (R_OR1K_LO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_LO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_GOT_LO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOT_LO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_GD_LO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_GD_LO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_LDM_LO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLD_LDM_LO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_TLS_IE_LO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_TLS_IE_LO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- HOWTO (R_OR1K_SLO13, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_SLO13", /* name */
- false, /* partial_inplace */
- 0x0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- /* A 26 bit PLT relocation, using ADRP. Shifted by 2. */
- HOWTO (R_OR1K_PLTA26, /* Type. */
- 2, /* Rightshift. */
- 2, /* Size (0 = byte, 1 = short, 2 = long). */
- 26, /* Bitsize. */
- true, /* pc_relative. */
- 0, /* Bitpos. */
- complain_overflow_signed, /* Complain on overflow. */
- bfd_elf_generic_reloc, /* Special Function. */
- "R_OR1K_PLTA26", /* Name. */
- false, /* Partial Inplace. */
- 0, /* Source Mask. */
- 0x03ffffff, /* Dest Mask. */
- true), /* PC relative offset? */
- HOWTO (R_OR1K_GOT_AHI16, /* type */
- 16, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOT_AHI16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false), /* pcrel_offset */
- };
- /* A copy of the R_OR1K_GOT16 used in the presense of R_OR1K_GOT_AHI16
- relocations when we know we can ignore overflows. */
- static reloc_howto_type or1k_elf_got16_no_overflow_howto =
- HOWTO (R_OR1K_GOT16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 16, /* bitsize */
- false, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_OR1K_GOT16", /* name */
- false, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
- false); /* pcrel_offset */
- /* Map BFD reloc types to Or1k ELF reloc types. */
- struct or1k_reloc_map
- {
- bfd_reloc_code_real_type bfd_reloc_val;
- unsigned int or1k_reloc_val;
- };
- static const struct or1k_reloc_map or1k_reloc_map[] =
- {
- { BFD_RELOC_NONE, R_OR1K_NONE },
- { BFD_RELOC_32, R_OR1K_32 },
- { BFD_RELOC_16, R_OR1K_16 },
- { BFD_RELOC_8, R_OR1K_8 },
- { BFD_RELOC_LO16, R_OR1K_LO_16_IN_INSN },
- { BFD_RELOC_HI16, R_OR1K_HI_16_IN_INSN },
- { BFD_RELOC_HI16_S, R_OR1K_AHI16 },
- { BFD_RELOC_OR1K_REL_26, R_OR1K_INSN_REL_26 },
- { BFD_RELOC_VTABLE_ENTRY, R_OR1K_GNU_VTENTRY },
- { BFD_RELOC_VTABLE_INHERIT, R_OR1K_GNU_VTINHERIT },
- { BFD_RELOC_32_PCREL, R_OR1K_32_PCREL },
- { BFD_RELOC_16_PCREL, R_OR1K_16_PCREL },
- { BFD_RELOC_8_PCREL, R_OR1K_8_PCREL },
- { BFD_RELOC_LO16_GOTOFF, R_OR1K_GOTOFF_LO16 },
- { BFD_RELOC_HI16_GOTOFF, R_OR1K_GOTOFF_HI16 },
- { BFD_RELOC_HI16_S_GOTOFF, R_OR1K_GOTOFF_AHI16 },
- { BFD_RELOC_OR1K_GOTPC_HI16, R_OR1K_GOTPC_HI16 },
- { BFD_RELOC_OR1K_GOTPC_LO16, R_OR1K_GOTPC_LO16 },
- { BFD_RELOC_OR1K_GOT16, R_OR1K_GOT16 },
- { BFD_RELOC_OR1K_PLT26, R_OR1K_PLT26 },
- { BFD_RELOC_OR1K_GLOB_DAT, R_OR1K_GLOB_DAT },
- { BFD_RELOC_OR1K_COPY, R_OR1K_COPY },
- { BFD_RELOC_OR1K_JMP_SLOT, R_OR1K_JMP_SLOT },
- { BFD_RELOC_OR1K_RELATIVE, R_OR1K_RELATIVE },
- { BFD_RELOC_OR1K_TLS_GD_HI16, R_OR1K_TLS_GD_HI16 },
- { BFD_RELOC_OR1K_TLS_GD_LO16, R_OR1K_TLS_GD_LO16 },
- { BFD_RELOC_OR1K_TLS_LDM_HI16, R_OR1K_TLS_LDM_HI16 },
- { BFD_RELOC_OR1K_TLS_LDM_LO16, R_OR1K_TLS_LDM_LO16 },
- { BFD_RELOC_OR1K_TLS_LDO_HI16, R_OR1K_TLS_LDO_HI16 },
- { BFD_RELOC_OR1K_TLS_LDO_LO16, R_OR1K_TLS_LDO_LO16 },
- { BFD_RELOC_OR1K_TLS_IE_HI16, R_OR1K_TLS_IE_HI16 },
- { BFD_RELOC_OR1K_TLS_IE_LO16, R_OR1K_TLS_IE_LO16 },
- { BFD_RELOC_OR1K_TLS_IE_AHI16, R_OR1K_TLS_IE_AHI16 },
- { BFD_RELOC_OR1K_TLS_LE_HI16, R_OR1K_TLS_LE_HI16 },
- { BFD_RELOC_OR1K_TLS_LE_LO16, R_OR1K_TLS_LE_LO16 },
- { BFD_RELOC_OR1K_TLS_LE_AHI16, R_OR1K_TLS_LE_AHI16 },
- { BFD_RELOC_OR1K_SLO16, R_OR1K_SLO16 },
- { BFD_RELOC_OR1K_GOTOFF_SLO16, R_OR1K_GOTOFF_SLO16 },
- { BFD_RELOC_OR1K_TLS_LE_SLO16, R_OR1K_TLS_LE_SLO16 },
- { BFD_RELOC_OR1K_PCREL_PG21, R_OR1K_PCREL_PG21 },
- { BFD_RELOC_OR1K_GOT_PG21, R_OR1K_GOT_PG21 },
- { BFD_RELOC_OR1K_TLS_GD_PG21, R_OR1K_TLS_GD_PG21 },
- { BFD_RELOC_OR1K_TLS_LDM_PG21, R_OR1K_TLS_LDM_PG21 },
- { BFD_RELOC_OR1K_TLS_IE_PG21, R_OR1K_TLS_IE_PG21 },
- { BFD_RELOC_OR1K_LO13, R_OR1K_LO13 },
- { BFD_RELOC_OR1K_GOT_LO13, R_OR1K_GOT_LO13 },
- { BFD_RELOC_OR1K_TLS_GD_LO13, R_OR1K_TLS_GD_LO13 },
- { BFD_RELOC_OR1K_TLS_LDM_LO13, R_OR1K_TLS_LDM_LO13 },
- { BFD_RELOC_OR1K_TLS_IE_LO13, R_OR1K_TLS_IE_LO13 },
- { BFD_RELOC_OR1K_SLO13, R_OR1K_SLO13 },
- { BFD_RELOC_OR1K_PLTA26, R_OR1K_PLTA26 },
- { BFD_RELOC_OR1K_GOT_AHI16, R_OR1K_GOT_AHI16 },
- };
- /* tls_type is a mask used to track how each symbol is accessed,
- it may be accessed via multiple types of TLS access methods.
- We track this for sizing (allocating got + relocation section space) and
- for how to process relocations. */
- #define TLS_UNKNOWN 0
- #define TLS_NONE 1
- #define TLS_GD 2
- #define TLS_LD 4
- #define TLS_IE 8
- #define TLS_LE 16
- /* The size of the TLS thread control block, used to offset LE access. */
- #define TCB_SIZE 16
- /* ELF linker hash entry. */
- struct elf_or1k_link_hash_entry
- {
- struct elf_link_hash_entry root;
- /* For calculating PLT size. */
- bfd_vma plt_index;
- /* Track type of TLS access. */
- unsigned char tls_type;
- };
- /* ELF object data. */
- struct elf_or1k_obj_tdata
- {
- struct elf_obj_tdata root;
- /* tls_type for each local got entry. */
- unsigned char *local_tls_type;
- };
- #define elf_or1k_tdata(abfd) \
- ((struct elf_or1k_obj_tdata *) (abfd)->tdata.any)
- #define elf_or1k_local_tls_type(abfd) \
- (elf_or1k_tdata (abfd)->local_tls_type)
- /* ELF linker hash table. */
- struct elf_or1k_link_hash_table
- {
- struct elf_link_hash_table root;
- bfd_vma plt_count;
- bool saw_plta;
- };
- static size_t
- elf_or1k_plt_entry_size (bfd_vma plt_index)
- {
- bfd_vma plt_reloc;
- plt_reloc = plt_index * sizeof (Elf32_External_Rela);
- return (plt_reloc > 0xffff) ? PLT_ENTRY_SIZE_LARGE : PLT_ENTRY_SIZE;
- }
- /* Get the ELF linker hash table from a link_info structure. */
- #define or1k_elf_hash_table(p) \
- ((is_elf_hash_table ((p)->hash) \
- && elf_hash_table_id (elf_hash_table (p)) == OR1K_ELF_DATA) \
- ? (struct elf_or1k_link_hash_table *) (p)->hash : NULL)
- static bool
- elf_or1k_mkobject (bfd *abfd)
- {
- return bfd_elf_allocate_object (abfd, sizeof (struct elf_or1k_obj_tdata),
- OR1K_ELF_DATA);
- }
- /* Create an entry in an or1k ELF linker hash table. */
- static struct bfd_hash_entry *
- or1k_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
- struct bfd_hash_table *table,
- const char *string)
- {
- struct elf_or1k_link_hash_entry *ret =
- (struct elf_or1k_link_hash_entry *) entry;
- /* Allocate the structure if it has not already been allocated by a
- subclass. */
- if (ret == NULL)
- ret = bfd_hash_allocate (table,
- sizeof (struct elf_or1k_link_hash_entry));
- if (ret == NULL)
- return NULL;
- /* Call the allocation method of the superclass. */
- ret = ((struct elf_or1k_link_hash_entry *)
- _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
- if (ret != NULL)
- {
- struct elf_or1k_link_hash_entry *eh;
- eh = (struct elf_or1k_link_hash_entry *) ret;
- eh->tls_type = TLS_UNKNOWN;
- }
- return (struct bfd_hash_entry *) ret;
- }
- /* Create an or1k ELF linker hash table. */
- static struct bfd_link_hash_table *
- or1k_elf_link_hash_table_create (bfd *abfd)
- {
- struct elf_or1k_link_hash_table *ret;
- size_t amt = sizeof (struct elf_or1k_link_hash_table);
- ret = bfd_zmalloc (amt);
- if (ret == NULL)
- return NULL;
- if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
- or1k_elf_link_hash_newfunc,
- sizeof (struct elf_or1k_link_hash_entry),
- OR1K_ELF_DATA))
- {
- free (ret);
- return NULL;
- }
- return &ret->root.root;
- }
- static reloc_howto_type *
- or1k_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
- bfd_reloc_code_real_type bcode)
- {
- unsigned int i;
- for (i = 0; i < ARRAY_SIZE (or1k_reloc_map); i++)
- if (or1k_reloc_map[i].bfd_reloc_val == bcode)
- {
- unsigned int ocode = or1k_reloc_map[i].or1k_reloc_val;
- if (ocode < (unsigned int) R_OR1K_max)
- return &or1k_elf_howto_table[ocode];
- else
- break;
- }
- return NULL;
- }
- static reloc_howto_type *
- or1k_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
- const char *r_name)
- {
- unsigned int i;
- for (i = 0; i < R_OR1K_max; i++)
- if (or1k_elf_howto_table[i].name != NULL
- && strcasecmp (or1k_elf_howto_table[i].name, r_name) == 0)
- return &or1k_elf_howto_table[i];
- return NULL;
- }
- /* Set the howto pointer for an Or1k ELF reloc. */
- static bool
- or1k_info_to_howto_rela (bfd * abfd,
- arelent * cache_ptr,
- Elf_Internal_Rela * dst)
- {
- unsigned int r_type;
- r_type = ELF32_R_TYPE (dst->r_info);
- if (r_type >= (unsigned int) R_OR1K_max)
- {
- /* xgettext:c-format */
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- cache_ptr->howto = & or1k_elf_howto_table[r_type];
- return true;
- }
- /* Return the relocation value for @tpoff relocations.. */
- static bfd_vma
- tpoff (struct bfd_link_info *info, bfd_vma address, bool dynamic)
- {
- struct elf_link_hash_table *htab = elf_hash_table (info);
- bfd_vma base;
- /* If tls_sec is NULL, we should have signalled an error already. */
- if (htab->tls_sec == NULL)
- return 0;
- if (dynamic)
- return address - htab->tls_sec->vma;
- else
- {
- /* On or1k, the tp points to just after the tcb, if we have an alignment
- greater than the tcb size we need to offset by the alignment difference. */
- base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power)
- - TCB_SIZE;
- /* The thread pointer on or1k stores the address after the TCB where
- the data is, just compute the difference. No need to compensate
- for the size of TCB. */
- return address - htab->tls_sec->vma + base;
- }
- }
- /* If we have both IE and GD accesses to a symbol the IE relocations should be
- offset by 8 bytes because the got contains both GD and IE entries. */
- static bfd_vma
- or1k_initial_exec_offset (reloc_howto_type *howto, unsigned char tls_type_mask)
- {
- switch (howto->type)
- {
- case R_OR1K_TLS_IE_HI16:
- case R_OR1K_TLS_IE_LO16:
- case R_OR1K_TLS_IE_PG21:
- case R_OR1K_TLS_IE_LO13:
- case R_OR1K_TLS_IE_AHI16:
- return (tls_type_mask & TLS_GD) != 0 ? 8 : 0;
- default:
- return 0;
- }
- }
- /* Like _bfd_final_link_relocate, but handles non-contiguous fields. */
- static bfd_reloc_status_type
- or1k_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd,
- asection *input_section, bfd_byte *contents,
- bfd_vma offset, bfd_vma value)
- {
- bfd_reloc_status_type status = bfd_reloc_ok;
- int size = bfd_get_reloc_size (howto);
- bfd_vma x, place;
- /* Sanity check the address. */
- if (offset + size > bfd_get_section_limit_octets (input_bfd, input_section))
- return bfd_reloc_outofrange;
- place = (input_section->output_section->vma
- + input_section->output_offset
- + (howto->pcrel_offset ? offset : 0));
- switch (howto->type)
- {
- case R_OR1K_AHI16:
- case R_OR1K_GOT_AHI16:
- case R_OR1K_GOTOFF_AHI16:
- case R_OR1K_TLS_IE_AHI16:
- case R_OR1K_TLS_LE_AHI16:
- /* Adjust the operand to match with a signed LO16. */
- value += 0x8000;
- break;
- case R_OR1K_INSN_REL_26:
- value -= place;
- /* Diagnose mis-aligned branch targets. */
- if (value & 3)
- status = bfd_reloc_dangerous;
- break;
- case R_OR1K_PCREL_PG21:
- case R_OR1K_GOT_PG21:
- case R_OR1K_TLS_GD_PG21:
- case R_OR1K_TLS_LDM_PG21:
- case R_OR1K_TLS_IE_PG21:
- value = (value & -8192) - (place & -8192);
- break;
- case R_OR1K_LO13:
- case R_OR1K_GOT_LO13:
- case R_OR1K_TLS_GD_LO13:
- case R_OR1K_TLS_LDM_LO13:
- case R_OR1K_TLS_IE_LO13:
- case R_OR1K_SLO13:
- value &= 8191;
- break;
- default:
- if (howto->pc_relative)
- value -= place;
- break;
- }
- status = bfd_check_overflow (howto->complain_on_overflow,
- howto->bitsize,
- howto->rightshift,
- bfd_arch_bits_per_address (input_bfd),
- value);
- value >>= howto->rightshift;
- /* If we're overwriting the entire destination,
- then no need to read the current contents. */
- if (size == 0 || howto->dst_mask == N_ONES (size))
- x = 0;
- else
- {
- BFD_ASSERT (size == 4);
- x = bfd_get_32 (input_bfd, contents + offset);
- }
- switch (howto->type)
- {
- case R_OR1K_SLO16:
- case R_OR1K_GOTOFF_SLO16:
- case R_OR1K_TLS_LE_SLO16:
- case R_OR1K_SLO13:
- /* The split imm16 field used for stores. */
- x = (x & ~0x3e007ff) | ((value & 0xf800) << 10) | (value & 0x7ff);
- break;
- default:
- {
- bfd_vma fieldmask = howto->dst_mask;
- value <<= howto->bitpos;
- x = (x & ~fieldmask) | (value & fieldmask);
- }
- break;
- }
- /* Put the relocated value back in the object file. */
- switch (size)
- {
- case 0:
- break;
- case 1:
- bfd_put_8 (input_bfd, x, contents + offset);
- break;
- case 2:
- bfd_put_16 (input_bfd, x, contents + offset);
- break;
- case 4:
- bfd_put_32 (input_bfd, x, contents + offset);
- break;
- #ifdef BFD64
- case 8:
- bfd_put_64 (input_bfd, x, contents + offset);
- break;
- #endif
- default:
- _bfd_error_handler
- (_("%pB: Cannot handle relocation value size of %d"),
- input_bfd, size);
- abort ();
- }
- return status;
- }
- /* Relocate an Or1k ELF section.
- The RELOCATE_SECTION function is called by the new ELF backend linker
- to handle the relocations for a section.
- The relocs are always passed as Rela structures; if the section
- actually uses Rel structures, the r_addend field will always be
- zero.
- This function is responsible for adjusting the section contents as
- necessary, and (if using Rela relocs and generating a relocatable
- output file) adjusting the reloc addend as necessary.
- This function does not have to worry about setting the reloc
- address or the reloc symbol index.
- LOCAL_SYMS is a pointer to the swapped in local symbols.
- LOCAL_SECTIONS is an array giving the section in the input file
- corresponding to the st_shndx field of each local symbol.
- The global hash table entry for the global symbols can be found
- via elf_sym_hashes (input_bfd).
- When generating relocatable output, this function must handle
- STB_LOCAL/STT_SECTION symbols specially. The output symbol is
- going to be the section symbol corresponding to the output
- section, which means that the addend must be adjusted
- accordingly. */
- static int
- or1k_elf_relocate_section (bfd *output_bfd,
- struct bfd_link_info *info,
- bfd *input_bfd,
- asection *input_section,
- bfd_byte *contents,
- Elf_Internal_Rela *relocs,
- Elf_Internal_Sym *local_syms,
- asection **local_sections)
- {
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
- struct elf_or1k_link_hash_table *htab = or1k_elf_hash_table (info);
- asection *sreloc;
- bfd_vma *local_got_offsets;
- asection *sgot, *splt;
- bfd_vma plt_base, got_base, got_sym_value;
- bool ret_val = true;
- bool saw_gotha = false;
- if (htab == NULL)
- return false;
- local_got_offsets = elf_local_got_offsets (input_bfd);
- sreloc = elf_section_data (input_section)->sreloc;
- splt = htab->root.splt;
- plt_base = 0;
- if (splt != NULL)
- plt_base = splt->output_section->vma + splt->output_offset;
- sgot = htab->root.sgot;
- got_sym_value = got_base = 0;
- if (sgot != NULL)
- {
- struct elf_link_hash_entry *hgot = htab->root.hgot;
- got_sym_value = (hgot->root.u.def.value
- + hgot->root.u.def.section->output_section->vma
- + hgot->root.u.def.section->output_offset);
- got_base = sgot->output_section->vma + sgot->output_offset;
- }
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (input_bfd);
- relend = relocs + input_section->reloc_count;
- for (rel = relocs; rel < relend; rel++)
- {
- reloc_howto_type *howto;
- unsigned long r_symndx;
- Elf_Internal_Sym *sym;
- asection *sec;
- struct elf_link_hash_entry *h;
- bfd_vma relocation;
- bfd_reloc_status_type r;
- const char *name = NULL;
- int r_type;
- r_type = ELF32_R_TYPE (rel->r_info);
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_type == R_OR1K_GNU_VTINHERIT
- || r_type == R_OR1K_GNU_VTENTRY)
- continue;
- if (r_type < 0 || r_type >= (int) R_OR1K_max)
- {
- _bfd_error_handler
- (_("%pB: unknown relocation type %d"),
- input_bfd, (int) r_type);
- bfd_set_error (bfd_error_bad_value);
- ret_val = false;
- continue;
- }
- howto = or1k_elf_howto_table + ELF32_R_TYPE (rel->r_info);
- h = NULL;
- sym = NULL;
- sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
- name = bfd_elf_string_from_elf_section
- (input_bfd, symtab_hdr->sh_link, sym->st_name);
- name = name == NULL ? bfd_section_name (sec) : name;
- }
- else
- {
- bool unresolved_reloc, warned, ignored;
- RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
- r_symndx, symtab_hdr, sym_hashes,
- h, sec, relocation,
- unresolved_reloc, warned, ignored);
- name = h->root.root.string;
- }
- if (sec != NULL && discarded_section (sec))
- RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
- rel, 1, relend, howto, 0, contents);
- if (bfd_link_relocatable (info))
- continue;
- switch (howto->type)
- {
- case R_OR1K_PLT26:
- case R_OR1K_PLTA26:
- /* If the call is not local, redirect the branch to the PLT.
- Otherwise do nothing to send the branch to the symbol direct. */
- if (!SYMBOL_CALLS_LOCAL (info, h)
- && h->plt.offset != (bfd_vma) -1)
- relocation = plt_base + h->plt.offset;
- /* Addend should be zero. */
- if (rel->r_addend != 0)
- {
- _bfd_error_handler
- (_("%pB: addend should be zero for plt relocations"),
- input_bfd);
- bfd_set_error (bfd_error_bad_value);
- ret_val = false;
- }
- break;
- case R_OR1K_GOT_AHI16:
- case R_OR1K_GOT16:
- case R_OR1K_GOT_PG21:
- case R_OR1K_GOT_LO13:
- {
- bfd_vma off;
- /* Relocation is to the entry for this symbol
- in the global offset table. */
- BFD_ASSERT (sgot != NULL);
- if (h != NULL)
- {
- bool dyn;
- off = h->got.offset;
- BFD_ASSERT (off != (bfd_vma) -1);
- dyn = htab->root.dynamic_sections_created;
- if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
- bfd_link_pic (info),
- h)
- || (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h)))
- {
- /* This is actually a static link, or it is a -Bsymbolic
- link and the symbol is defined locally, or the symbol
- was forced to be local because of a version file.
- We must initialize this entry in the GOT. Since the
- offset must always be a multiple of 4, we use the least
- significant bit to record whether we have initialized
- it already.
- When doing a dynamic link, we create a .rela.got
- relocation entry to initialize the value. This
- is done in the finish_dynamic_symbol routine. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- /* Write entry in GOT. */
- bfd_put_32 (output_bfd, relocation,
- sgot->contents + off);
- /* Mark GOT entry as having been written. */
- h->got.offset |= 1;
- }
- }
- }
- else
- {
- bfd_byte *loc;
- BFD_ASSERT (local_got_offsets != NULL
- && local_got_offsets[r_symndx] != (bfd_vma) -1);
- /* Get offset into GOT table. */
- off = local_got_offsets[r_symndx];
- /* The offset must always be a multiple of 4. We use
- the least significant bit to record whether we have
- already processed this entry. */
- if ((off & 1) != 0)
- off &= ~1;
- else
- {
- /* Write entry in GOT. */
- bfd_put_32 (output_bfd, relocation, sgot->contents + off);
- if (bfd_link_pic (info))
- {
- asection *srelgot;
- Elf_Internal_Rela outrel;
- /* We need to generate a R_OR1K_RELATIVE reloc
- for the dynamic linker. */
- srelgot = htab->root.srelgot;
- BFD_ASSERT (srelgot != NULL);
- outrel.r_offset = got_base + off;
- outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
- outrel.r_addend = relocation;
- loc = srelgot->contents;
- loc += (srelgot->reloc_count
- * sizeof (Elf32_External_Rela));
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- ++srelgot->reloc_count;
- }
- local_got_offsets[r_symndx] |= 1;
- }
- }
- /* The GOT_PG21 and GOT_LO13 relocs are pc-relative,
- while the GOT16 reloc is GOT relative. */
- relocation = got_base + off;
- if (r_type == R_OR1K_GOT16
- || r_type == R_OR1K_GOT_AHI16)
- relocation -= got_sym_value;
- if (r_type == R_OR1K_GOT_AHI16)
- saw_gotha = true;
- /* If we have a R_OR1K_GOT16 following a R_OR1K_GOT_AHI16
- relocation we assume the code is doing the right thing to avoid
- overflows. */
- if (r_type == R_OR1K_GOT16 && saw_gotha)
- howto = &or1k_elf_got16_no_overflow_howto;
- /* Addend should be zero. */
- if (rel->r_addend != 0)
- {
- _bfd_error_handler
- (_("%pB: addend should be zero for got relocations"),
- input_bfd);
- bfd_set_error (bfd_error_bad_value);
- ret_val = false;
- }
- }
- break;
- case R_OR1K_GOTOFF_LO16:
- case R_OR1K_GOTOFF_HI16:
- case R_OR1K_GOTOFF_AHI16:
- case R_OR1K_GOTOFF_SLO16:
- /* Relocation is offset from GOT. */
- BFD_ASSERT (sgot != NULL);
- if (!SYMBOL_REFERENCES_LOCAL (info, h))
- {
- _bfd_error_handler
- (_("%pB: gotoff relocation against dynamic symbol %s"),
- input_bfd, h->root.root.string);
- ret_val = false;
- bfd_set_error (bfd_error_bad_value);
- }
- relocation -= got_sym_value;
- break;
- case R_OR1K_INSN_REL_26:
- /* For a non-shared link, these will reference plt or call the
- version of actual object. */
- if (bfd_link_pic (info) && !SYMBOL_CALLS_LOCAL (info, h))
- {
- _bfd_error_handler
- (_("%pB: pc-relative relocation against dynamic symbol %s"),
- input_bfd, name);
- ret_val = false;
- bfd_set_error (bfd_error_bad_value);
- }
- break;
- case R_OR1K_PCREL_PG21:
- case R_OR1K_LO13:
- case R_OR1K_SLO13:
- /* For a non-shared link, these will reference either the plt
- or a .dynbss copy of the symbol. */
- if (bfd_link_pic (info) && !SYMBOL_REFERENCES_LOCAL (info, h))
- {
- _bfd_error_handler
- (_("%pB: pc-relative relocation against dynamic symbol %s"),
- input_bfd, name);
- ret_val = false;
- bfd_set_error (bfd_error_bad_value);
- }
- break;
- case R_OR1K_HI_16_IN_INSN:
- case R_OR1K_LO_16_IN_INSN:
- case R_OR1K_AHI16:
- case R_OR1K_SLO16:
- if (bfd_link_pic (info))
- {
- _bfd_error_handler
- (_("%pB: non-pic relocation against symbol %s"),
- input_bfd, name);
- ret_val = false;
- bfd_set_error (bfd_error_bad_value);
- }
- break;
- case R_OR1K_32:
- /* R_OR1K_16? */
- {
- /* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
- from removed linkonce sections, or sections discarded by
- a linker script. */
- if (r_symndx == STN_UNDEF
- || (input_section->flags & SEC_ALLOC) == 0)
- break;
- /* Emit a direct relocation if the symbol is dynamic,
- or a RELATIVE reloc for shared objects. We can omit
- RELATIVE relocs to local undefweak symbols. */
- if (bfd_link_pic (info)
- ? (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
- : (h != NULL
- && h->dynindx != -1
- && !h->non_got_ref
- && ((h->def_dynamic && !h->def_regular)
- || h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined)))
- {
- Elf_Internal_Rela outrel;
- bfd_byte *loc;
- bool skip;
- /* When generating a shared object, these relocations
- are copied into the output file to be resolved at run
- time. */
- BFD_ASSERT (sreloc != NULL);
- skip = false;
- outrel.r_offset =
- _bfd_elf_section_offset (output_bfd, info, input_section,
- rel->r_offset);
- if (outrel.r_offset == (bfd_vma) -1)
- skip = true;
- else if (outrel.r_offset == (bfd_vma) -2)
- skip = true;
- outrel.r_offset += (input_section->output_section->vma
- + input_section->output_offset);
- if (skip)
- memset (&outrel, 0, sizeof outrel);
- else if (SYMBOL_REFERENCES_LOCAL (info, h))
- {
- outrel.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
- outrel.r_addend = relocation + rel->r_addend;
- }
- else
- {
- BFD_ASSERT (h->dynindx != -1);
- outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
- outrel.r_addend = rel->r_addend;
- }
- loc = sreloc->contents;
- loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- break;
- }
- break;
- }
- case R_OR1K_TLS_LDM_HI16:
- case R_OR1K_TLS_LDM_LO16:
- case R_OR1K_TLS_LDM_PG21:
- case R_OR1K_TLS_LDM_LO13:
- case R_OR1K_TLS_LDO_HI16:
- case R_OR1K_TLS_LDO_LO16:
- /* TODO: implement support for local dynamic. */
- BFD_FAIL ();
- _bfd_error_handler
- (_("%pB: support for local dynamic not implemented"),
- input_bfd);
- bfd_set_error (bfd_error_bad_value);
- return false;
- case R_OR1K_TLS_GD_HI16:
- case R_OR1K_TLS_GD_LO16:
- case R_OR1K_TLS_GD_PG21:
- case R_OR1K_TLS_GD_LO13:
- case R_OR1K_TLS_IE_HI16:
- case R_OR1K_TLS_IE_LO16:
- case R_OR1K_TLS_IE_PG21:
- case R_OR1K_TLS_IE_LO13:
- case R_OR1K_TLS_IE_AHI16:
- {
- bfd_vma gotoff;
- Elf_Internal_Rela rela;
- asection *srelgot;
- bfd_byte *loc;
- bool dynamic;
- int indx = 0;
- unsigned char tls_type;
- srelgot = htab->root.srelgot;
- /* Mark as TLS related GOT entry by setting
- bit 2 to indcate TLS and bit 1 to indicate GOT. */
- if (h != NULL)
- {
- gotoff = h->got.offset;
- tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
- h->got.offset |= 3;
- }
- else
- {
- unsigned char *local_tls_type;
- gotoff = local_got_offsets[r_symndx];
- local_tls_type = (unsigned char *) elf_or1k_local_tls_type (input_bfd);
- tls_type = local_tls_type == NULL ? TLS_NONE
- : local_tls_type[r_symndx];
- local_got_offsets[r_symndx] |= 3;
- }
- /* Only process the relocation once. */
- if ((gotoff & 1) != 0)
- {
- gotoff += or1k_initial_exec_offset (howto, tls_type);
- /* The PG21 and LO13 relocs are pc-relative, while the
- rest are GOT relative. */
- relocation = got_base + (gotoff & ~3);
- if (!(r_type == R_OR1K_TLS_GD_PG21
- || r_type == R_OR1K_TLS_GD_LO13
- || r_type == R_OR1K_TLS_IE_PG21
- || r_type == R_OR1K_TLS_IE_LO13))
- relocation -= got_sym_value;
- break;
- }
- BFD_ASSERT (elf_hash_table (info)->hgot == NULL
- || elf_hash_table (info)->hgot->root.u.def.value == 0);
- if (h != NULL)
- {
- bool dyn = htab->root.dynamic_sections_created;
- bool pic = bfd_link_pic (info);
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, pic, h)
- && (!pic || !SYMBOL_REFERENCES_LOCAL (info, h)))
- indx = h->dynindx;
- }
- /* Dynamic entries will require relocations. If we do not need
- them we will just use the default R_OR1K_NONE and
- not set anything. */
- dynamic = (bfd_link_pic (info) || indx != 0)
- && (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak);
- /* Shared GD. */
- if (dynamic && ((tls_type & TLS_GD) != 0))
- {
- int i;
- /* Add DTPMOD and DTPOFF GOT and rela entries. */
- for (i = 0; i < 2; ++i)
- {
- BFD_ASSERT (srelgot->contents != NULL);
- rela.r_offset = got_base + gotoff + i*4;
- if (h != NULL && h->dynindx != -1)
- {
- rela.r_info = ELF32_R_INFO (h->dynindx,
- (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
- rela.r_addend = 0;
- }
- else
- {
- rela.r_info = ELF32_R_INFO (0,
- (i == 0 ? R_OR1K_TLS_DTPMOD : R_OR1K_TLS_DTPOFF));
- rela.r_addend =
- (i == 0 ? 0 : tpoff (info, relocation, dynamic));
- }
- loc = srelgot->contents;
- loc += (srelgot->reloc_count++
- * sizeof (Elf32_External_Rela));
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- bfd_put_32 (output_bfd, 0, sgot->contents + gotoff + i*4);
- }
- }
- /* Static GD. */
- else if ((tls_type & TLS_GD) != 0)
- {
- bfd_put_32 (output_bfd, 1, sgot->contents + gotoff);
- bfd_put_32 (output_bfd, tpoff (info, relocation, dynamic),
- sgot->contents + gotoff + 4);
- }
- gotoff += or1k_initial_exec_offset (howto, tls_type);
- /* Shared IE. */
- if (dynamic && ((tls_type & TLS_IE) != 0))
- {
- BFD_ASSERT (srelgot->contents != NULL);
- /* Add TPOFF GOT and rela entries. */
- rela.r_offset = got_base + gotoff;
- if (h != NULL && h->dynindx != -1)
- {
- rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_TLS_TPOFF);
- rela.r_addend = 0;
- }
- else
- {
- rela.r_info = ELF32_R_INFO (0, R_OR1K_TLS_TPOFF);
- rela.r_addend = tpoff (info, relocation, dynamic);
- }
- loc = srelgot->contents;
- loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- bfd_put_32 (output_bfd, 0, sgot->contents + gotoff);
- }
- /* Static IE. */
- else if ((tls_type & TLS_IE) != 0)
- bfd_put_32 (output_bfd, tpoff (info, relocation, dynamic),
- sgot->contents + gotoff);
- /* The PG21 and LO13 relocs are pc-relative, while the
- rest are GOT relative. */
- relocation = got_base + gotoff;
- if (!(r_type == R_OR1K_TLS_GD_PG21
- || r_type == R_OR1K_TLS_GD_LO13
- || r_type == R_OR1K_TLS_IE_PG21
- || r_type == R_OR1K_TLS_IE_LO13))
- relocation -= got_sym_value;
- }
- break;
- case R_OR1K_TLS_LE_HI16:
- case R_OR1K_TLS_LE_LO16:
- case R_OR1K_TLS_LE_AHI16:
- case R_OR1K_TLS_LE_SLO16:
- /* Relocation is offset from TP. */
- relocation = tpoff (info, relocation, 0);
- break;
- case R_OR1K_TLS_DTPMOD:
- case R_OR1K_TLS_DTPOFF:
- case R_OR1K_TLS_TPOFF:
- /* These are resolved dynamically on load and shouldn't
- be used as linker input. */
- BFD_FAIL ();
- _bfd_error_handler
- (_("%pB: will not resolve runtime TLS relocation"),
- input_bfd);
- bfd_set_error (bfd_error_bad_value);
- return false;
- default:
- break;
- }
- r = or1k_final_link_relocate (howto, input_bfd, input_section, contents,
- rel->r_offset, relocation + rel->r_addend);
- if (r != bfd_reloc_ok)
- {
- const char *msg = NULL;
- switch (r)
- {
- case bfd_reloc_overflow:
- (*info->callbacks->reloc_overflow)
- (info, (h ? &h->root : NULL), name, howto->name,
- (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
- break;
- case bfd_reloc_undefined:
- (*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section, rel->r_offset, true);
- break;
- case bfd_reloc_outofrange:
- msg = _("internal error: out of range error");
- break;
- case bfd_reloc_notsupported:
- msg = _("internal error: unsupported relocation error");
- break;
- case bfd_reloc_dangerous:
- msg = _("internal error: dangerous relocation");
- break;
- default:
- msg = _("internal error: unknown error");
- break;
- }
- if (msg)
- (*info->callbacks->warning) (info, msg, name, input_bfd,
- input_section, rel->r_offset);
- }
- }
- return ret_val;
- }
- /* Return the section that should be marked against GC for a given
- relocation. */
- static asection *
- or1k_elf_gc_mark_hook (asection *sec,
- struct bfd_link_info *info,
- Elf_Internal_Rela *rel,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- if (h != NULL)
- switch (ELF32_R_TYPE (rel->r_info))
- {
- case R_OR1K_GNU_VTINHERIT:
- case R_OR1K_GNU_VTENTRY:
- return NULL;
- }
- return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
- }
- /* Look through the relocs for a section during the first phase. */
- static bool
- or1k_elf_check_relocs (bfd *abfd,
- struct bfd_link_info *info,
- asection *sec,
- const Elf_Internal_Rela *relocs)
- {
- Elf_Internal_Shdr *symtab_hdr;
- struct elf_link_hash_entry **sym_hashes;
- const Elf_Internal_Rela *rel;
- const Elf_Internal_Rela *rel_end;
- struct elf_or1k_link_hash_table *htab;
- bfd *dynobj;
- asection *sreloc = NULL;
- if (bfd_link_relocatable (info))
- return true;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- sym_hashes = elf_sym_hashes (abfd);
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->root.dynobj;
- rel_end = relocs + sec->reloc_count;
- for (rel = relocs; rel < rel_end; rel++)
- {
- struct elf_link_hash_entry *h;
- unsigned long r_symndx;
- unsigned char tls_type;
- int r_type;
- r_symndx = ELF32_R_SYM (rel->r_info);
- if (r_symndx < symtab_hdr->sh_info)
- h = NULL;
- else
- {
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- while (h->root.type == bfd_link_hash_indirect
- || h->root.type == bfd_link_hash_warning)
- h = (struct elf_link_hash_entry *) h->root.u.i.link;
- }
- r_type = ELF32_R_TYPE (rel->r_info);
- switch (r_type)
- {
- case R_OR1K_TLS_GD_HI16:
- case R_OR1K_TLS_GD_LO16:
- case R_OR1K_TLS_GD_PG21:
- case R_OR1K_TLS_GD_LO13:
- tls_type = TLS_GD;
- break;
- case R_OR1K_TLS_LDM_HI16:
- case R_OR1K_TLS_LDM_LO16:
- case R_OR1K_TLS_LDM_PG21:
- case R_OR1K_TLS_LDM_LO13:
- case R_OR1K_TLS_LDO_HI16:
- case R_OR1K_TLS_LDO_LO16:
- tls_type = TLS_LD;
- break;
- case R_OR1K_TLS_IE_HI16:
- case R_OR1K_TLS_IE_LO16:
- case R_OR1K_TLS_IE_PG21:
- case R_OR1K_TLS_IE_LO13:
- case R_OR1K_TLS_IE_AHI16:
- tls_type = TLS_IE;
- break;
- case R_OR1K_TLS_LE_HI16:
- case R_OR1K_TLS_LE_LO16:
- case R_OR1K_TLS_LE_AHI16:
- case R_OR1K_TLS_LE_SLO16:
- tls_type = TLS_LE;
- break;
- default:
- tls_type = TLS_NONE;
- }
- /* Record TLS type. */
- if (h != NULL)
- ((struct elf_or1k_link_hash_entry *) h)->tls_type |= tls_type;
- else
- {
- unsigned char *local_tls_type;
- /* This is a TLS type record for a local symbol. */
- local_tls_type = (unsigned char *) elf_or1k_local_tls_type (abfd);
- if (local_tls_type == NULL)
- {
- bfd_size_type size;
- size = symtab_hdr->sh_info;
- local_tls_type = bfd_zalloc (abfd, size);
- if (local_tls_type == NULL)
- return false;
- elf_or1k_local_tls_type (abfd) = local_tls_type;
- }
- local_tls_type[r_symndx] |= tls_type;
- }
- switch (r_type)
- {
- /* This relocation describes the C++ object vtable hierarchy.
- Reconstruct it for later use during GC. */
- case R_OR1K_GNU_VTINHERIT:
- if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
- return false;
- break;
- /* This relocation describes which C++ vtable entries are actually
- used. Record for later use during GC. */
- case R_OR1K_GNU_VTENTRY:
- if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
- return false;
- break;
- /* This relocation requires .plt entry. */
- case R_OR1K_PLTA26:
- htab->saw_plta = true;
- /* FALLTHRU */
- case R_OR1K_PLT26:
- if (h != NULL)
- {
- h->needs_plt = 1;
- h->plt.refcount += 1;
- }
- break;
- case R_OR1K_GOT_AHI16:
- case R_OR1K_GOT16:
- case R_OR1K_GOT_PG21:
- case R_OR1K_GOT_LO13:
- case R_OR1K_TLS_GD_HI16:
- case R_OR1K_TLS_GD_LO16:
- case R_OR1K_TLS_GD_PG21:
- case R_OR1K_TLS_GD_LO13:
- case R_OR1K_TLS_IE_HI16:
- case R_OR1K_TLS_IE_LO16:
- case R_OR1K_TLS_IE_PG21:
- case R_OR1K_TLS_IE_LO13:
- case R_OR1K_TLS_IE_AHI16:
- if (h != NULL)
- h->got.refcount += 1;
- else
- {
- bfd_signed_vma *local_got_refcounts;
- /* This is a global offset table entry for a local symbol. */
- local_got_refcounts = elf_local_got_refcounts (abfd);
- if (local_got_refcounts == NULL)
- {
- bfd_size_type size;
- size = symtab_hdr->sh_info;
- size *= sizeof (bfd_signed_vma);
- local_got_refcounts = bfd_zalloc (abfd, size);
- if (local_got_refcounts == NULL)
- return false;
- elf_local_got_refcounts (abfd) = local_got_refcounts;
- }
- local_got_refcounts[r_symndx] += 1;
- }
- /* FALLTHRU */
- case R_OR1K_GOTOFF_HI16:
- case R_OR1K_GOTOFF_LO16:
- case R_OR1K_GOTOFF_AHI16:
- case R_OR1K_GOTOFF_SLO16:
- if (htab->root.sgot == NULL)
- {
- if (dynobj == NULL)
- htab->root.dynobj = dynobj = abfd;
- if (!_bfd_elf_create_got_section (dynobj, info))
- return false;
- }
- break;
- case R_OR1K_INSN_REL_26:
- case R_OR1K_HI_16_IN_INSN:
- case R_OR1K_LO_16_IN_INSN:
- case R_OR1K_AHI16:
- case R_OR1K_SLO16:
- case R_OR1K_32:
- case R_OR1K_PCREL_PG21:
- case R_OR1K_LO13:
- case R_OR1K_SLO13:
- {
- if (h != NULL && !bfd_link_pic (info))
- {
- /* We may need a copy reloc. */
- h->non_got_ref = 1;
- /* We may also need a .plt entry. */
- h->plt.refcount += 1;
- if (r_type != R_OR1K_INSN_REL_26)
- h->pointer_equality_needed = 1;
- }
- /* If we are creating a shared library, and this is a reloc
- against a global symbol, or a non PC relative reloc
- against a local symbol, then we need to copy the reloc
- into the shared library. However, if we are linking with
- -Bsymbolic, we do not need to copy a reloc against a
- global symbol which is defined in an object we are
- including in the link (i.e., DEF_REGULAR is set). At
- this point we have not seen all the input files, so it is
- possible that DEF_REGULAR is not set now but will be set
- later (it is never cleared). In case of a weak definition,
- DEF_REGULAR may be cleared later by a strong definition in
- a shared library. We account for that possibility below by
- storing information in the relocs_copied field of the hash
- table entry. A similar situation occurs when creating
- shared libraries and symbol visibility changes render the
- symbol local.
- If on the other hand, we are creating an executable, we
- may need to keep relocations for symbols satisfied by a
- dynamic library if we manage to avoid copy relocs for the
- symbol. */
- if ((bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && (r_type != R_OR1K_INSN_REL_26
- || (h != NULL
- && (!SYMBOLIC_BIND (info, h)
- || h->root.type == bfd_link_hash_defweak
- || !h->def_regular))))
- || (!bfd_link_pic (info)
- && (sec->flags & SEC_ALLOC) != 0
- && h != NULL
- && (h->root.type == bfd_link_hash_defweak
- || !h->def_regular)))
- {
- struct elf_dyn_relocs *sec_relocs;
- struct elf_dyn_relocs **head;
- /* When creating a shared object, we must copy these
- relocs into the output file. We create a reloc
- section in dynobj and make room for the reloc. */
- if (sreloc == NULL)
- {
- const char *name;
- unsigned int strndx = elf_elfheader (abfd)->e_shstrndx;
- unsigned int shnam = _bfd_elf_single_rel_hdr (sec)->sh_name;
- name = bfd_elf_string_from_elf_section (abfd, strndx, shnam);
- if (name == NULL)
- return false;
- if (!startswith (name, ".rela")
- || strcmp (bfd_section_name (sec), name + 5) != 0)
- {
- _bfd_error_handler
- /* xgettext:c-format */
- (_("%pB: bad relocation section name `%s\'"),
- abfd, name);
- }
- if (htab->root.dynobj == NULL)
- htab->root.dynobj = abfd;
- dynobj = htab->root.dynobj;
- sreloc = bfd_get_section_by_name (dynobj, name);
- if (sreloc == NULL)
- {
- sreloc = _bfd_elf_make_dynamic_reloc_section
- (sec, dynobj, 2, abfd, /*rela?*/ true);
- if (sreloc == NULL)
- return false;
- }
- elf_section_data (sec)->sreloc = sreloc;
- }
- /* If this is a global symbol, we count the number of
- relocations we need for this symbol. */
- if (h != NULL)
- head = &h->dyn_relocs;
- else
- {
- /* Track dynamic relocs needed for local syms too.
- We really need local syms available to do this
- easily. Oh well. */
- asection *s;
- Elf_Internal_Sym *isym;
- void *vpp;
- isym = bfd_sym_from_r_symndx (&htab->root.sym_cache,
- abfd, r_symndx);
- if (isym == NULL)
- return false;
- s = bfd_section_from_elf_index (abfd, isym->st_shndx);
- if (s == NULL)
- return false;
- vpp = &elf_section_data (s)->local_dynrel;
- head = (struct elf_dyn_relocs **) vpp;
- }
- sec_relocs = *head;
- /* Allocate this sections dynamic reolcations structure if this
- is a new section. */
- if (sec_relocs == NULL || sec_relocs->sec != sec)
- {
- size_t amt = sizeof *sec_relocs;
- sec_relocs = ((struct elf_dyn_relocs *)
- bfd_alloc (htab->root.dynobj, amt));
- if (sec_relocs == NULL)
- return false;
- sec_relocs->next = *head;
- *head = sec_relocs;
- sec_relocs->sec = sec;
- sec_relocs->count = 0;
- sec_relocs->pc_count = 0;
- }
- sec_relocs->count += 1;
- if (r_type == R_OR1K_INSN_REL_26)
- sec_relocs->pc_count += 1;
- }
- }
- break;
- }
- }
- return true;
- }
- static void
- or1k_write_plt_entry (bfd *output_bfd, bfd_byte *contents, unsigned insnj,
- unsigned insns[], size_t insn_count)
- {
- unsigned nodelay = elf_elfheader (output_bfd)->e_flags & EF_OR1K_NODELAY;
- unsigned output_insns[PLT_MAX_INSN_COUNT];
- /* Copy instructions into the output buffer. */
- for (size_t i = 0; i < insn_count; i++)
- output_insns[i] = insns[i];
- /* Honor the no-delay-slot setting. */
- if (insns[insn_count-1] == OR1K_NOP)
- {
- unsigned slot1, slot2;
- if (nodelay)
- slot1 = insns[insn_count-2], slot2 = insnj;
- else
- slot1 = insnj, slot2 = insns[insn_count-2];
- output_insns[insn_count-2] = slot1;
- output_insns[insn_count-1] = slot2;
- output_insns[insn_count] = OR1K_NOP;
- }
- else
- {
- unsigned slot1, slot2;
- if (nodelay)
- slot1 = insns[insn_count-1], slot2 = insnj;
- else
- slot1 = insnj, slot2 = insns[insn_count-1];
- output_insns[insn_count-1] = slot1;
- output_insns[insn_count] = slot2;
- }
- /* Write out the output buffer. */
- for (size_t i = 0; i < (insn_count+1); i++)
- bfd_put_32 (output_bfd, output_insns[i], contents + (i*4));
- }
- /* Finish up the dynamic sections. */
- static bool
- or1k_elf_finish_dynamic_sections (bfd *output_bfd,
- struct bfd_link_info *info)
- {
- bfd *dynobj;
- asection *sdyn, *sgot;
- struct elf_or1k_link_hash_table *htab;
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->root.dynobj;
- sgot = htab->root.sgotplt;
- sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
- if (htab->root.dynamic_sections_created)
- {
- asection *splt;
- Elf32_External_Dyn *dyncon, *dynconend;
- BFD_ASSERT (sgot != NULL && sdyn != NULL);
- dyncon = (Elf32_External_Dyn *) sdyn->contents;
- dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
- for (; dyncon < dynconend; dyncon++)
- {
- Elf_Internal_Dyn dyn;
- asection *s;
- bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
- switch (dyn.d_tag)
- {
- default:
- continue;
- case DT_PLTGOT:
- s = htab->root.sgotplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
- case DT_JMPREL:
- s = htab->root.srelplt;
- dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
- break;
- case DT_PLTRELSZ:
- s = htab->root.srelplt;
- dyn.d_un.d_val = s->size;
- break;
- }
- bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
- }
- /* Fill in the first entry in the procedure linkage table. */
- splt = htab->root.splt;
- if (splt && splt->size > 0)
- {
- unsigned plt[PLT_MAX_INSN_COUNT];
- size_t plt_insn_count = 3;
- bfd_vma got_addr = sgot->output_section->vma + sgot->output_offset;
- /* Note we force 16 byte alignment on the .got, so that
- the movhi/adrp can be shared between the two loads. */
- if (htab->saw_plta)
- {
- bfd_vma pc = splt->output_section->vma + splt->output_offset;
- unsigned pa = ((got_addr >> 13) - (pc >> 13)) & 0x1fffff;
- unsigned po = got_addr & 0x1fff;
- plt[0] = OR1K_ADRP(12) | pa;
- plt[1] = OR1K_LWZ(15,12) | (po + 8);
- plt[2] = OR1K_LWZ(12,12) | (po + 4);
- }
- else if (bfd_link_pic (info))
- {
- plt[0] = OR1K_LWZ(15, 16) | 8; /* .got+8 */
- plt[1] = OR1K_LWZ(12, 16) | 4; /* .got+4 */
- plt[2] = OR1K_NOP;
- }
- else
- {
- unsigned ha = ((got_addr + 0x8000) >> 16) & 0xffff;
- unsigned lo = got_addr & 0xffff;
- plt[0] = OR1K_MOVHI(12) | ha;
- plt[1] = OR1K_LWZ(15,12) | (lo + 8);
- plt[2] = OR1K_LWZ(12,12) | (lo + 4);
- }
- or1k_write_plt_entry (output_bfd, splt->contents, OR1K_JR(15),
- plt, plt_insn_count);
- elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
- }
- }
- /* Set the first entry in the global offset table to the address of
- the dynamic section. */
- if (sgot && sgot->size > 0)
- {
- if (sdyn == NULL)
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
- else
- bfd_put_32 (output_bfd,
- sdyn->output_section->vma + sdyn->output_offset,
- sgot->contents);
- elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
- }
- if (htab->root.sgot && htab->root.sgot->size > 0)
- elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize = 4;
- return true;
- }
- /* Finish up dynamic symbol handling. We set the contents of various
- dynamic sections here. */
- static bool
- or1k_elf_finish_dynamic_symbol (bfd *output_bfd,
- struct bfd_link_info *info,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
- {
- struct elf_or1k_link_hash_table *htab;
- bfd_byte *loc;
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- if (h->plt.offset != (bfd_vma) -1)
- {
- unsigned int plt[PLT_MAX_INSN_COUNT];
- size_t plt_insn_count = 3;
- asection *splt;
- asection *sgot;
- asection *srela;
- bfd_vma plt_base_addr;
- bfd_vma plt_addr;
- bfd_vma plt_index;
- bfd_vma plt_reloc;
- bfd_vma got_base_addr;
- bfd_vma got_offset;
- bfd_vma got_addr;
- Elf_Internal_Rela rela;
- bool large_plt_entry;
- /* This symbol has an entry in the procedure linkage table. Set
- it up. */
- BFD_ASSERT (h->dynindx != -1);
- splt = htab->root.splt;
- sgot = htab->root.sgotplt;
- srela = htab->root.srelplt;
- BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
- plt_base_addr = splt->output_section->vma + splt->output_offset;
- got_base_addr = sgot->output_section->vma + sgot->output_offset;
- /* Get the index in the procedure linkage table which
- corresponds to this symbol. This is the index of this symbol
- in all the symbols for which we are making plt entries. The
- first entry in the procedure linkage table is reserved. */
- plt_index = ((struct elf_or1k_link_hash_entry *) h)->plt_index;
- plt_addr = plt_base_addr + h->plt.offset;
- plt_reloc = plt_index * sizeof (Elf32_External_Rela);
- large_plt_entry = (elf_or1k_plt_entry_size (plt_index)
- == PLT_ENTRY_SIZE_LARGE);
- /* Get the offset into the .got table of the entry that
- corresponds to this function. Each .got entry is 4 bytes.
- The first three are reserved. */
- got_offset = (plt_index + 3) * 4;
- got_addr = got_base_addr + got_offset;
- /* Fill in the entry in the procedure linkage table. */
- if (htab->saw_plta)
- {
- unsigned pa = ((got_addr >> 13) - (plt_addr >> 13)) & 0x1fffff;
- unsigned po = (got_addr & 0x1fff);
- plt[0] = OR1K_ADRP(12) | pa;
- plt[1] = OR1K_LWZ(12,12) | po;
- plt[2] = OR1K_ORI0(11) | plt_reloc;
- }
- else if (bfd_link_pic (info))
- {
- if (large_plt_entry)
- {
- unsigned gotha = ((got_offset + 0x8000) >> 16) & 0xffff;
- unsigned got = got_offset & 0xffff;
- unsigned pltrelhi = (plt_reloc >> 16) & 0xffff;
- unsigned pltrello = plt_reloc & 0xffff;
- plt[0] = OR1K_MOVHI(12) | gotha;
- plt[1] = OR1K_ADD(12,12,16);
- plt[2] = OR1K_LWZ(12,12) | got;
- plt[3] = OR1K_MOVHI(11) | pltrelhi;
- plt[4] = OR1K_ORI(11,11) | pltrello;
- plt_insn_count = 5;
- }
- else
- {
- plt[0] = OR1K_LWZ(12,16) | got_offset;
- plt[1] = OR1K_ORI0(11) | plt_reloc;
- plt[2] = OR1K_NOP;
- }
- }
- else
- {
- unsigned ha = ((got_addr + 0x8000) >> 16) & 0xffff;
- unsigned lo = got_addr & 0xffff;
- plt[0] = OR1K_MOVHI(12) | ha;
- plt[1] = OR1K_LWZ(12,12) | lo;
- plt[2] = OR1K_ORI0(11) | plt_reloc;
- }
- /* For large code model we fixup the non-PIC PLT relocation instructions
- here. */
- if (large_plt_entry && !bfd_link_pic (info))
- {
- unsigned pltrelhi = (plt_reloc >> 16) & 0xffff;
- unsigned pltrello = plt_reloc & 0xffff;
- plt[2] = OR1K_MOVHI(11) | pltrelhi;
- plt[3] = OR1K_ORI(11,11) | pltrello;
- plt[4] = OR1K_NOP;
- plt_insn_count = 5;
- }
- or1k_write_plt_entry (output_bfd, splt->contents + h->plt.offset,
- OR1K_JR(12), plt, plt_insn_count);
- /* Fill in the entry in the global offset table. We initialize it to
- point to the top of the plt. This is done to lazy lookup the actual
- symbol as the first plt entry will be setup by libc to call the
- runtime dynamic linker. */
- bfd_put_32 (output_bfd, plt_base_addr, sgot->contents + got_offset);
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = got_addr;
- rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_JMP_SLOT);
- rela.r_addend = 0;
- loc = srela->contents;
- loc += plt_index * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- if (!h->def_regular)
- {
- /* Mark the symbol as undefined, rather than as defined in
- the .plt section. Leave the value alone. */
- sym->st_shndx = SHN_UNDEF;
- }
- }
- if (h->got.offset != (bfd_vma) -1
- && (h->got.offset & 2) == 0) /* Homemade TLS check. */
- {
- asection *sgot;
- asection *srelgot;
- Elf_Internal_Rela rela;
- /* This symbol has an entry in the global offset table. Set it
- up. */
- sgot = htab->root.sgot;
- srelgot = htab->root.srelgot;
- BFD_ASSERT (sgot != NULL && srelgot != NULL);
- rela.r_offset = (sgot->output_section->vma
- + sgot->output_offset
- + (h->got.offset &~ 1));
- /* If this is a -Bsymbolic link, and the symbol is defined
- locally, we just want to emit a RELATIVE reloc. Likewise if
- the symbol was forced to be local because of a version file.
- The entry in the global offset table will already have been
- initialized in the relocate_section function. */
- if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h))
- {
- rela.r_info = ELF32_R_INFO (0, R_OR1K_RELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- }
- else
- {
- BFD_ASSERT ((h->got.offset & 1) == 0);
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_GLOB_DAT);
- rela.r_addend = 0;
- }
- loc = srelgot->contents;
- loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- ++srelgot->reloc_count;
- }
- if (h->needs_copy)
- {
- asection *s;
- Elf_Internal_Rela rela;
- /* This symbols needs a copy reloc. Set it up. */
- BFD_ASSERT (h->dynindx != -1
- && (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak));
- rela.r_offset = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- rela.r_info = ELF32_R_INFO (h->dynindx, R_OR1K_COPY);
- rela.r_addend = 0;
- if (h->root.u.def.section == htab->root.sdynrelro)
- s = htab->root.sreldynrelro;
- else
- s = htab->root.srelbss;
- loc = s->contents + s->reloc_count * sizeof (Elf32_External_Rela);
- bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
- ++s->reloc_count;
- }
- /* Mark some specially defined symbols as absolute. */
- if (strcmp (h->root.root.string, "_DYNAMIC") == 0
- || h == htab->root.hgot)
- sym->st_shndx = SHN_ABS;
- return true;
- }
- static enum elf_reloc_type_class
- or1k_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
- const asection *rel_sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *rela)
- {
- switch ((int) ELF32_R_TYPE (rela->r_info))
- {
- case R_OR1K_RELATIVE: return reloc_class_relative;
- case R_OR1K_JMP_SLOT: return reloc_class_plt;
- case R_OR1K_COPY: return reloc_class_copy;
- default: return reloc_class_normal;
- }
- }
- /* Adjust a symbol defined by a dynamic object and referenced by a
- regular object. The current definition is in some section of the
- dynamic object, but we're not including those sections. We have to
- change the definition to something the rest of the link can
- understand. */
- static bool
- or1k_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *h)
- {
- struct elf_or1k_link_hash_table *htab;
- bfd *dynobj;
- asection *s, *srel;
- dynobj = elf_hash_table (info)->dynobj;
- /* Make sure we know what is going on here. */
- BFD_ASSERT (dynobj != NULL
- && (h->needs_plt
- || h->is_weakalias
- || (h->def_dynamic
- && h->ref_regular
- && !h->def_regular)));
- /* If this is a function, put it in the procedure linkage table. We
- will fill in the contents of the procedure linkage table later,
- when we know the address of the .got section. */
- if (h->type == STT_FUNC
- || h->needs_plt)
- {
- if (h->plt.refcount <= 0
- || (SYMBOL_CALLS_LOCAL (info, h)
- || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
- && h->root.type == bfd_link_hash_undefweak)))
- {
- /* This case can occur if we saw a PLT reloc in an input
- file, but the symbol was never referred to by a dynamic
- object. In such a case, we don't actually need to build
- a procedure linkage table, and we can just do a PCREL
- reloc instead. */
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- return true;
- }
- else
- h->plt.offset = (bfd_vma) -1;
- /* If this is a weak symbol, and there is a real definition, the
- processor independent code will have arranged for us to see the
- real definition first, and we can just use the same value. */
- if (h->is_weakalias)
- {
- struct elf_link_hash_entry *def = weakdef (h);
- BFD_ASSERT (def->root.type == bfd_link_hash_defined);
- h->root.u.def.section = def->root.u.def.section;
- h->root.u.def.value = def->root.u.def.value;
- return true;
- }
- /* This is a reference to a symbol defined by a dynamic object which
- is not a function. */
- /* If we are creating a shared library, we must presume that the
- only references to the symbol are via the global offset table.
- For such cases we need not do anything here; the relocations will
- be handled correctly by relocate_section. */
- if (bfd_link_pic (info))
- return true;
- /* If there are no references to this symbol that do not use the
- GOT, we don't need to generate a copy reloc. */
- if (!h->non_got_ref)
- return true;
- /* If -z nocopyreloc was given, we won't generate them either. */
- if (info->nocopyreloc)
- {
- h->non_got_ref = 0;
- return true;
- }
- /* If we don't find any dynamic relocs in read-only sections, then
- we'll be keeping the dynamic relocs and avoiding the copy reloc. */
- if (!_bfd_elf_readonly_dynrelocs (h))
- {
- h->non_got_ref = 0;
- return true;
- }
- /* We must allocate the symbol in our .dynbss section, which will
- become part of the .bss section of the executable. There will be
- an entry for this symbol in the .dynsym section. The dynamic
- object will contain position independent code, so all references
- from the dynamic object to this symbol will go through the global
- offset table. The dynamic linker will use the .dynsym entry to
- determine the address it must put in the global offset table, so
- both the dynamic object and the regular object will refer to the
- same memory location for the variable. */
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- /* We must generate a R_OR1K_COPY reloc to tell the dynamic linker
- to copy the initial value out of the dynamic object and into the
- runtime process image. We need to remember the offset into the
- .rela.bss section we are going to use. */
- if ((h->root.u.def.section->flags & SEC_READONLY) != 0)
- {
- s = htab->root.sdynrelro;
- srel = htab->root.sreldynrelro;
- }
- else
- {
- s = htab->root.sdynbss;
- srel = htab->root.srelbss;
- }
- if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
- {
- srel->size += sizeof (Elf32_External_Rela);
- h->needs_copy = 1;
- }
- return _bfd_elf_adjust_dynamic_copy (info, h, s);
- }
- /* Caclulate an update the sizes required for a symbol in the GOT and
- RELA relocation section based on the TLS_TYPE and whether or not the symbol
- is DYNAMIC.
- Symbols with TLS_GD access require 8 bytes in the GOT and, if dynamic,
- require two relocation entries. Symbols with TLS_IE access require 4 bytes
- in the GOT and, if dynamic, require one relocation entry. Symbols may have
- both TLS_GD and TLS_IE access to be accounted for.
- Other symbols require 4 bytes in the GOT table and, if dynamic, require one
- relocation entry. */
- static void
- or1k_set_got_and_rela_sizes (const unsigned char tls_type,
- const bool dynamic,
- bfd_vma *got_size,
- bfd_vma *rela_size)
- {
- bool is_tls_entry = false;
- /* TLS GD requires two GOT entries and two relocs. */
- if ((tls_type & TLS_GD) != 0)
- {
- *got_size += 8;
- is_tls_entry = true;
- }
- if ((tls_type & TLS_IE) != 0)
- {
- *got_size += 4;
- is_tls_entry = true;
- }
- if (!is_tls_entry)
- *got_size += 4;
- if (dynamic)
- {
- if ((tls_type & TLS_GD) != 0)
- *rela_size += 2 * sizeof (Elf32_External_Rela);
- if ((tls_type & TLS_IE) != 0)
- *rela_size += sizeof (Elf32_External_Rela);
- if (!is_tls_entry)
- *rela_size += sizeof (Elf32_External_Rela);
- }
- }
- /* Allocate space in .plt, .got and associated reloc sections for
- dynamic relocs. */
- static bool
- allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
- {
- struct bfd_link_info *info;
- struct elf_or1k_link_hash_table *htab;
- struct elf_dyn_relocs *sec_relocs;
- if (h->root.type == bfd_link_hash_indirect)
- return true;
- info = (struct bfd_link_info *) inf;
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- if (htab->root.dynamic_sections_created
- && h->plt.refcount > 0)
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
- {
- asection *splt = htab->root.splt;
- bfd_vma plt_index;
- /* Track the index of our plt entry for use in calculating size. */
- plt_index = htab->plt_count++;
- ((struct elf_or1k_link_hash_entry *) h)->plt_index = plt_index;
- /* If this is the first .plt entry, make room for the special
- first entry. */
- if (splt->size == 0)
- splt->size = elf_or1k_plt_entry_size (plt_index);
- h->plt.offset = splt->size;
- /* If this symbol is not defined in a regular file, and we are
- not generating a shared library, then set the symbol to this
- location in the .plt. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! bfd_link_pic (info)
- && !h->def_regular)
- {
- h->root.u.def.section = splt;
- h->root.u.def.value = h->plt.offset;
- }
- /* Make room for this entry. */
- splt->size += elf_or1k_plt_entry_size (plt_index);
- /* We also need to make an entry in the .got.plt section, which
- will be placed in the .got section by the linker script. */
- htab->root.sgotplt->size += 4;
- /* We also need to make an entry in the .rel.plt section. */
- htab->root.srelplt->size += sizeof (Elf32_External_Rela);
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- }
- else
- {
- h->plt.offset = (bfd_vma) -1;
- h->needs_plt = 0;
- }
- if (h->got.refcount > 0)
- {
- asection *sgot;
- bool dyn;
- unsigned char tls_type;
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- sgot = htab->root.sgot;
- h->got.offset = sgot->size;
- tls_type = ((struct elf_or1k_link_hash_entry *) h)->tls_type;
- dyn = htab->root.dynamic_sections_created;
- dyn = WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h);
- or1k_set_got_and_rela_sizes (tls_type, dyn,
- &sgot->size, &htab->root.srelgot->size);
- }
- else
- h->got.offset = (bfd_vma) -1;
- if (h->dyn_relocs == NULL)
- return true;
- /* In the shared -Bsymbolic case, discard space allocated for
- dynamic pc-relative relocs against symbols which turn out to be
- defined in regular objects. For the normal shared case, discard
- space for pc-relative relocs that have become local due to symbol
- visibility changes. */
- if (bfd_link_pic (info))
- {
- if (SYMBOL_CALLS_LOCAL (info, h))
- {
- struct elf_dyn_relocs **pp;
- for (pp = &h->dyn_relocs; (sec_relocs = *pp) != NULL;)
- {
- sec_relocs->count -= sec_relocs->pc_count;
- sec_relocs->pc_count = 0;
- if (sec_relocs->count == 0)
- *pp = sec_relocs->next;
- else
- pp = &sec_relocs->next;
- }
- }
- /* Also discard relocs on undefined weak syms with non-default
- visibility. */
- if (h->dyn_relocs != NULL
- && h->root.type == bfd_link_hash_undefweak)
- {
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- h->dyn_relocs = NULL;
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
- else if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- }
- }
- else
- {
- /* For the non-shared case, discard space for relocs against
- symbols which turn out to need copy relocs or are not
- dynamic. */
- if (!h->non_got_ref
- && ((h->def_dynamic
- && !h->def_regular)
- || (htab->root.dynamic_sections_created
- && (h->root.type == bfd_link_hash_undefweak
- || h->root.type == bfd_link_hash_undefined))))
- {
- /* Make sure this symbol is output as a dynamic symbol.
- Undefined weak syms won't yet be marked as dynamic. */
- if (h->dynindx == -1
- && !h->forced_local)
- {
- if (! bfd_elf_link_record_dynamic_symbol (info, h))
- return false;
- }
- /* If that succeeded, we know we'll be keeping all the
- relocs. */
- if (h->dynindx != -1)
- goto keep;
- }
- h->dyn_relocs = NULL;
- keep: ;
- }
- /* Finally, allocate space. */
- for (sec_relocs = h->dyn_relocs;
- sec_relocs != NULL;
- sec_relocs = sec_relocs->next)
- {
- asection *sreloc = elf_section_data (sec_relocs->sec)->sreloc;
- sreloc->size += sec_relocs->count * sizeof (Elf32_External_Rela);
- }
- return true;
- }
- /* Set the sizes of the dynamic sections. */
- static bool
- or1k_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info)
- {
- struct elf_or1k_link_hash_table *htab;
- bfd *dynobj;
- asection *s;
- bool relocs;
- bfd *ibfd;
- htab = or1k_elf_hash_table (info);
- if (htab == NULL)
- return false;
- dynobj = htab->root.dynobj;
- BFD_ASSERT (dynobj != NULL);
- if (htab->root.dynamic_sections_created)
- {
- /* Set the contents of the .interp section to the interpreter. */
- if (bfd_link_executable (info) && !info->nointerp)
- {
- s = bfd_get_section_by_name (dynobj, ".interp");
- BFD_ASSERT (s != NULL);
- s->size = sizeof ELF_DYNAMIC_INTERPRETER;
- s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
- }
- }
- /* Set up .got offsets for local syms, and space for local dynamic
- relocs. */
- for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
- {
- bfd_signed_vma *local_got;
- bfd_signed_vma *end_local_got;
- bfd_size_type locsymcount;
- Elf_Internal_Shdr *symtab_hdr;
- unsigned char *local_tls_type;
- asection *srel;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
- continue;
- for (s = ibfd->sections; s != NULL; s = s->next)
- {
- struct elf_dyn_relocs *sec_relocs;
- for (sec_relocs = ((struct elf_dyn_relocs *)
- elf_section_data (s)->local_dynrel);
- sec_relocs != NULL;
- sec_relocs = sec_relocs->next)
- {
- if (! bfd_is_abs_section (sec_relocs->sec)
- && bfd_is_abs_section (sec_relocs->sec->output_section))
- {
- /* Input section has been discarded, either because
- it is a copy of a linkonce section or due to
- linker script /DISCARD/, so we'll be discarding
- the relocs too. */
- }
- else if (sec_relocs->count != 0)
- {
- srel = elf_section_data (sec_relocs->sec)->sreloc;
- srel->size += sec_relocs->count
- * sizeof (Elf32_External_Rela);
- if ((sec_relocs->sec->output_section->flags & SEC_READONLY)
- != 0)
- info->flags |= DF_TEXTREL;
- }
- }
- }
- local_got = elf_local_got_refcounts (ibfd);
- if (!local_got)
- continue;
- symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
- locsymcount = symtab_hdr->sh_info;
- end_local_got = local_got + locsymcount;
- s = htab->root.sgot;
- srel = htab->root.srelgot;
- local_tls_type = (unsigned char *) elf_or1k_local_tls_type (ibfd);
- for (; local_got < end_local_got; ++local_got)
- {
- if (*local_got > 0)
- {
- unsigned char tls_type = (local_tls_type == NULL)
- ? TLS_UNKNOWN
- : *local_tls_type;
- *local_got = s->size;
- or1k_set_got_and_rela_sizes (tls_type, bfd_link_pic (info),
- &s->size, &srel->size);
- }
- else
- *local_got = (bfd_vma) -1;
- if (local_tls_type)
- ++local_tls_type;
- }
- }
- /* Allocate global sym .plt and .got entries, and space for global
- sym dynamic relocs. */
- elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
- /* We now have determined the sizes of the various dynamic sections.
- Allocate memory for them. */
- relocs = false;
- for (s = dynobj->sections; s != NULL; s = s->next)
- {
- if ((s->flags & SEC_LINKER_CREATED) == 0)
- continue;
- if (s == htab->root.splt
- || s == htab->root.sgot
- || s == htab->root.sgotplt
- || s == htab->root.sdynbss
- || s == htab->root.sdynrelro)
- {
- /* Strip this section if we don't need it; see the
- comment below. */
- }
- else if (startswith (bfd_section_name (s), ".rela"))
- {
- if (s->size != 0 && s != htab->root.srelplt)
- relocs = true;
- /* We use the reloc_count field as a counter if we need
- to copy relocs into the output file. */
- s->reloc_count = 0;
- }
- else
- /* It's not one of our sections, so don't allocate space. */
- continue;
- if (s->size == 0)
- {
- /* If we don't need this section, strip it from the
- output file. This is mostly to handle .rela.bss and
- .rela.plt. We must create both sections in
- create_dynamic_sections, because they must be created
- before the linker maps input sections to output
- sections. The linker does that before
- adjust_dynamic_symbol is called, and it is that
- function which decides whether anything needs to go
- into these sections. */
- s->flags |= SEC_EXCLUDE;
- continue;
- }
- if ((s->flags & SEC_HAS_CONTENTS) == 0)
- continue;
- /* Allocate memory for the section contents. We use bfd_zalloc
- here in case unused entries are not reclaimed before the
- section's contents are written out. This should not happen,
- but this way if it does, we get a R_OR1K_NONE reloc instead
- of garbage. */
- s->contents = bfd_zalloc (dynobj, s->size);
- if (s->contents == NULL)
- return false;
- }
- return _bfd_elf_add_dynamic_tags (output_bfd, info, relocs);
- }
- /* Copy the extra info we tack onto an elf_link_hash_entry. */
- static void
- or1k_elf_copy_indirect_symbol (struct bfd_link_info *info,
- struct elf_link_hash_entry *dir,
- struct elf_link_hash_entry *ind)
- {
- struct elf_or1k_link_hash_entry * edir;
- struct elf_or1k_link_hash_entry * eind;
- edir = (struct elf_or1k_link_hash_entry *) dir;
- eind = (struct elf_or1k_link_hash_entry *) ind;
- if (ind->root.type == bfd_link_hash_indirect)
- {
- if (dir->got.refcount <= 0)
- {
- edir->tls_type = eind->tls_type;
- eind->tls_type = TLS_UNKNOWN;
- }
- }
- _bfd_elf_link_hash_copy_indirect (info, dir, ind);
- }
- /* Set the right machine number. */
- static bool
- or1k_elf_object_p (bfd *abfd)
- {
- unsigned long mach = bfd_mach_or1k;
- if (elf_elfheader (abfd)->e_flags & EF_OR1K_NODELAY)
- mach = bfd_mach_or1knd;
- return bfd_default_set_arch_mach (abfd, bfd_arch_or1k, mach);
- }
- /* Store the machine number in the flags field. */
- static bool
- or1k_elf_final_write_processing (bfd *abfd)
- {
- switch (bfd_get_mach (abfd))
- {
- default:
- case bfd_mach_or1k:
- break;
- case bfd_mach_or1knd:
- elf_elfheader (abfd)->e_flags |= EF_OR1K_NODELAY;
- break;
- }
- return _bfd_elf_final_write_processing (abfd);
- }
- static bool
- or1k_elf_set_private_flags (bfd *abfd, flagword flags)
- {
- BFD_ASSERT (!elf_flags_init (abfd)
- || elf_elfheader (abfd)->e_flags == flags);
- elf_elfheader (abfd)->e_flags = flags;
- elf_flags_init (abfd) = true;
- return true;
- }
- /* Make sure all input files are consistent with respect to
- EF_OR1K_NODELAY flag setting. */
- static bool
- elf32_or1k_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
- {
- bfd *obfd = info->output_bfd;
- flagword out_flags;
- flagword in_flags;
- in_flags = elf_elfheader (ibfd)->e_flags;
- out_flags = elf_elfheader (obfd)->e_flags;
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
- if (!elf_flags_init (obfd))
- {
- elf_flags_init (obfd) = true;
- elf_elfheader (obfd)->e_flags = in_flags;
- return true;
- }
- if (in_flags == out_flags)
- return true;
- if ((in_flags & EF_OR1K_NODELAY) != (out_flags & EF_OR1K_NODELAY))
- {
- _bfd_error_handler
- (_("%pB: %s flag mismatch with previous modules"),
- ibfd, "EF_OR1K_NODELAY");
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- return true;
- }
- /* Implement elf_backend_grok_prstatus:
- Support for core dump NOTE sections. */
- static bool
- or1k_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
- {
- int offset;
- size_t size;
- switch (note->descsz)
- {
- default:
- return false;
- case 212: /* Linux/OpenRISC */
- /* pr_cursig */
- elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
- /* pr_pid */
- elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24);
- /* pr_reg */
- offset = 72;
- size = 132;
- break;
- }
- /* Make a ".reg/999" section. */
- return _bfd_elfcore_make_pseudosection (abfd, ".reg",
- size, note->descpos + offset);
- }
- /* Implement elf_backend_grok_psinfo. */
- static bool
- or1k_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
- {
- switch (note->descsz)
- {
- default:
- return false;
- case 128: /* Linux/OpenRISC elf_prpsinfo */
- elf_tdata (abfd)->core->program
- = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
- elf_tdata (abfd)->core->command
- = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
- }
- return true;
- }
- #define ELF_ARCH bfd_arch_or1k
- #define ELF_MACHINE_CODE EM_OR1K
- #define ELF_TARGET_ID OR1K_ELF_DATA
- #define ELF_MAXPAGESIZE 0x2000
- #define TARGET_BIG_SYM or1k_elf32_vec
- #define TARGET_BIG_NAME "elf32-or1k"
- #define elf_info_to_howto_rel NULL
- #define elf_info_to_howto or1k_info_to_howto_rela
- #define elf_backend_relocate_section or1k_elf_relocate_section
- #define elf_backend_gc_mark_hook or1k_elf_gc_mark_hook
- #define elf_backend_check_relocs or1k_elf_check_relocs
- #define elf_backend_reloc_type_class or1k_elf_reloc_type_class
- #define elf_backend_can_gc_sections 1
- #define elf_backend_rela_normal 1
- #define bfd_elf32_mkobject elf_or1k_mkobject
- #define bfd_elf32_bfd_merge_private_bfd_data elf32_or1k_merge_private_bfd_data
- #define bfd_elf32_bfd_set_private_flags or1k_elf_set_private_flags
- #define bfd_elf32_bfd_reloc_type_lookup or1k_reloc_type_lookup
- #define bfd_elf32_bfd_reloc_name_lookup or1k_reloc_name_lookup
- #define elf_backend_object_p or1k_elf_object_p
- #define elf_backend_final_write_processing or1k_elf_final_write_processing
- #define elf_backend_can_refcount 1
- #define elf_backend_plt_readonly 1
- #define elf_backend_want_got_plt 1
- #define elf_backend_want_plt_sym 0
- #define elf_backend_got_header_size 12
- #define elf_backend_dtrel_excludes_plt 1
- #define elf_backend_want_dynrelro 1
- #define bfd_elf32_bfd_link_hash_table_create or1k_elf_link_hash_table_create
- #define elf_backend_copy_indirect_symbol or1k_elf_copy_indirect_symbol
- #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
- #define elf_backend_finish_dynamic_sections or1k_elf_finish_dynamic_sections
- #define elf_backend_size_dynamic_sections or1k_elf_size_dynamic_sections
- #define elf_backend_adjust_dynamic_symbol or1k_elf_adjust_dynamic_symbol
- #define elf_backend_finish_dynamic_symbol or1k_elf_finish_dynamic_symbol
- #define elf_backend_grok_prstatus or1k_grok_prstatus
- #define elf_backend_grok_psinfo or1k_grok_psinfo
- #include "elf32-target.h"
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